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alter materialized view is taking a long time

526272Dec 7 2007 — edited Dec 7 2007
I have a MV with refresh option as REFRESH FAST ON DEMAND START WITH sysdate+0 NEXT SYSDATE+5/1440

I want to alter it as under:
ALTER MATERIALIZED VIEW mv_name REFRESH NEXT SYSDATE+(5/24*60);

The alter command has been running since 10 mnts. Does it take so long to refresh? I have around 41,000 records in it. Please advise.

Thanks
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Locked on Jan 4 2008
Added on Dec 7 2007
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